<template>
  <view class="cart-container" v-if="cart.length !== 0"> 
    <!-- 收货地址组件 -->
    <my-address></my-address>
    <!-- 购物车商品列表区域 -->
    <view class="cart-title">
      <!-- 左侧图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧文字 -->
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
          <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 计算组件 -->
    <my-settle></my-settle>
  </view>
  <!-- 购物车为空的页面 -->
  <view class="empty-cart" v-else>
    <image src="../../static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
    // import {mapGetters} from 'vuex'
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState, mapMutations} from 'vuex'
  export default {
    mixins: [badgeMix],
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    data() {
      return {
        options: [{
          text: '删除',
          style: {
            backgroundColor: "#c00000" }
        }]
      }
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
      radioChangeHandler(e){
        this.updateGoodsState(e)
        // console.log(e)
      },
      //监听numberBox的数量变化,商品数量的变化
      numberChangeHandler(e){
        this.updateGoodsCount(e)
        // console.log(e)
      },
      //实现滑动删除功能
      swipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
        // console.log(goods)
      }
    },
    // onShow() {
    //   //在页面刚展示的时候，设置数字徽标
    //   this.setBadge()
    // },
    // methods: {
    //   setBadge(){
    //     uni.setTabBarBadge({
    //       index: 2  ,//索引
    //       text: this.total + ''  //text值必须是字符串，不能是数字
    //     })
    //   }
    // }
  }
</script>

<style lang="scss">
.cart-container{
  padding-bottom: 50px;  
  }
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text{
    margin-left: 10px;
    font-size: 14px;
  }
}
.empty-cart{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  // justify-content: space-between;
  .empty-img{
    width: 90px;
    height: 90px;
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
